.load_more_box {
  height: 40px;
  line-height: 40px;
  position: relative;
  text-align: center;

  span {
    width: 5px;
    height: 5px;
    margin: 0 1px;
    display: inline-block;
    vertical-align: middle;
    background: #9b59b6;
    animation: load_more_box 1.5s infinite ease-in-out;
  }

  span:nth-child(2) {
    animation-delay: 0.2s;
  }

  span:nth-child(3) {
    animation-delay: 0.4s;
  }

  span:nth-child(4) {
    animation-delay: 0.6s;
  }

  span:nth-child(5) {
    animation-delay: 0.8s;
  }
}

@keyframes load_more_box {
  0% {
    height: 5px;
    background: #9b59b6;
  }

  25% {
    height: 30px;
    background: #0081ff;
  }

  50% {
    height: 5px;
    background: #9b59b6;
  }

  100% {
    height: 5px;
    background: #9b59b6;
  }
}
